{"id":"CVE-2026-6257","title":"Vvveb CMS < v1.0.8.2 Remote Code Execution via Media Management","summary":"Vvveb CMS before 1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename handler allows authenticated attackers to rename files to blocked extension…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-434"],"vendor":"Vvveb","product":"Vvveb CMS","affected":["cms < 1.0.8.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-04-21T18:05:35.427142Z"},"published":"2026-04-20","updated":"2026-10-29","sourceUpdated":"2026-10-29T21:16:17.889Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-6257","references":[{"url":"https://github.com/givanz/Vvveb/commit/6fb8eaa998265e33e8802cbc220d8859dbc144f2","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/vvveb-cms-remote-code-execution-via-media-management"}],"tags":["cve.org"],"epss":0.00633,"epssPercentile":0.50363,"ingestedAt":"2026-11-03T08:39:35.580Z","slug":"CVE-2026-6257","body":"## Overview\n\nVvveb CMS before 1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename handler allows authenticated attackers to rename files to blocked extensions .php or .htaccess. Attackers can exploit this logic flaw by first uploading a text file and renaming it to .htaccess to inject Apache directives that register PHP-executable MIME types, then uploading another file and renaming it to .php to execute arbitrary operating system commands as the www-data user.\n\n## Affected\n\n- `cms < 1.0.8.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}